Repository navigation
xds: Fix ext_proc client hang on unary and server-streaming RPCs when upstream is not ready - #13147
Open
kannanjgithub wants to merge 1 commit into
Open
kannanjgithub wants to merge 1 commit into
kannanjgithub wants to merge 1 commit into
Conversation
…when upstream is not ready Outbound request body messages in ExternalProcessorClientInterceptor were gated on super.isReady() before being forwarded to the upstream ClientCall. On unary and server-streaming RPCs (method.getType().clientSendsOneMessage()), ClientCallImpl intentionally suppresses onReady() notifications, meaning queued messages and halfClose were never drained when the upstream transport stream connected, causing the RPC to hang indefinitely. Treat the upstream call as ready for outbound message forwarding when method.getType().clientSendsOneMessage() is true via isUpstreamReady(). TAG=agy CONV=581f86a6-097d-44a2-9d6e-6f9d2e83cbc0
This branch has not been deployed
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Outbound request body messages in
ExternalProcessorClientInterceptorwere gated onsuper.isReady()before being forwarded to the upstreamClientCall. On unary and server-streaming RPCs (method.getType().clientSendsOneMessage()),ClientCallImplintentionally suppressesonReady()notifications, meaning queued messages andhalfClosewere never drained when the upstream transport stream connected, causing the RPC to hang indefinitely.Treat the upstream call as ready for outbound message forwarding when
method.getType().clientSendsOneMessage()is true viaisUpstreamReady().Thanks @ran-su for reporting this.